Hi Philip,
There's no "aarch64" command at all.
> help
adapter_khz [khz]
With an argument, change to the specified maximum jtag speed. For
JTAG, 0 KHz signifies adaptive clocking. With or without argument,
display current setting. (command valid any time)
adapter_name
Returns the name of the currently selected adapter (driver) (command
valid any time)
adapter_nsrst_assert_width [milliseconds]
delay after asserting SRST in ms (command valid any time)
adapter_nsrst_delay [milliseconds]
delay after deasserting SRST in ms (command valid any time)
add_help_text command_name helptext_string
Add new command help text; Command can be multiple tokens. (command
valid any time)
add_script_search_dir <directory>
dir to search for config files and scripts (command valid any time)
add_usage_text command_name usage_string
Add new command usage text; command can be multiple tokens. (command
valid any time)
arm
ARM command group (command valid any time)
arm core_state ['arm'|'thumb']
display/change ARM core state
arm disassemble address [count ['thumb']]
disassemble instructions
arm mcr cpnum op1 CRn CRm op2 value
write coprocessor register
arm mrc cpnum op1 CRn CRm op2
read coprocessor register
arm mrs op0 op1 CRn CRm op2
read system register
arm msr op0 op1 CRn CRm op2 value
write system register
arm reg
display ARM core registers
arm semihosting ['enable'|'disable']
activate support for semihosting operations
array2mem arrayname bitwidth address count
convert a TCL array to memory locations and write the 8/16/32 bit
values
bp <address> [<asid>]<length> ['hw'|'hw_ctx']
list or set hardware or software breakpoint
command
core command group (introspection) (command valid any time)
command mode [command_name ...]
Returns the command modes allowed by a command:'any', 'config', or
'exec'. If no command isspecified, returns the current command
mode. Returns 'unknown' if an unknown command is given. Command
can be multiple tokens. (command valid any time)
command type command_name [...]
Returns the type of built-in command:'native', 'simple', 'group',
or 'unknown'. Command can be multiple tokens. (command valid any
time)
cortex_a
Cortex-A command group (command valid any time)
cortex_a cache_info
display information about target caches
cortex_a dbginit
Initialize core debug
cortex_a smp_gdb
display/fix current core played to gdb
cortex_a smp_off
Stop smp handling
cortex_a smp_on
Restart smp handling
dap
DAP command group
dap apcsw [sprot]
Set csw access bit
dap apid [ap_num]
return ID register from AP (default currently selected AP)
dap apsel [ap_num]
Set the currently selected AP (default 0) and display the result
dap baseaddr [ap_num]
return debug base address from MEM-AP (default currently selected
AP)
dap info [ap_num]
display ROM table for MEM-AP (default currently selected AP)
dap memaccess [cycles]
set/get number of extra tck for MEM-AP memory bus access [0-255]
dap ti_be_32_quirks [enable]
set/get quirks mode for TI TMS450/TMS570 processors (configuration
command)
debug_level number
Sets the verbosity level of debugging output. 0 shows errors only; 1
adds warnings; 2 (default) adds other info; 3 adds debugging.
(command valid any time)
drscan tap_name [num_bits value]* ['-endstate' state_name]
Execute Data Register (DR) scan for one TAP. Other TAPs must be in
BYPASS mode.
dump_image filename address size
echo [-n] string
Logs a message at "user" priority. Output message to stdout. Option
"-n" suppresses trailing newline (command valid any time)
exit
exit telnet session
fast_load
loads active fast load image to current target - mainly for profiling
purposes
fast_load_image filename address ['bin'|'ihex'|'elf'|'s19'] [min_address [max_length]]
Load image into server memory for later use by fast_load; primarily
for profiling (command valid any time)
find <file>
print full path to file according to OpenOCD search rules (command
valid any time)
flash
NOR flash command group (command valid any time)
flash bank bank_id driver_name base_address size_bytes chip_width_bytes
bus_width_bytes target [driver_options ...]
Define a new bank with the given name, using the specified NOR
flash driver. (configuration command)
flash banks
Display table with information about flash banks. (command valid
any time)
flash init
Initialize flash devices. (configuration command)
flash list
Returns a list of details about the flash banks. (command valid any
time)
flush_count
Returns the number of times the JTAG queue has been flushed.
gdb_breakpoint_override ('hard'|'soft'|'disable')
Display or specify type of breakpoint to be used by gdb 'break'
commands. (command valid any time)
gdb_flash_program ('enable'|'disable')
enable or disable flash program (configuration command)
gdb_memory_map ('enable'|'disable')
enable or disable memory map (configuration command)
gdb_port [port_num]
Normally gdb listens to a TCP/IP port. Each subsequent GDB server
listens for the next port number after the base port number
specified. No arguments reports GDB port. "pipe" means listen to
stdin output to stdout, an integer is base port number, "disable"
disables port. Any other string is are interpreted as named pipe to
listen to. Output pipe is the same name as input pipe, but with 'o'
appended. (command valid any time)
gdb_report_data_abort ('enable'|'disable')
enable or disable reporting data aborts (configuration command)
gdb_save_tdesc
Save the target description file
gdb_sync
next stepi will return immediately allowing GDB to fetch register
state without affecting target state (command valid any time)
gdb_target_description ('enable'|'disable')
enable or disable target description (configuration command)
halt [milliseconds]
request target to halt, then wait up to the specifiednumber of
milliseconds (default 5000) for it to complete
help [command_name]
Show full command help; command can be multiple tokens. (command
valid any time)
hi6220.cpu
target command group (command valid any time)
hi6220.cpu arm
ARM command group (command valid any time)
hi6220.cpu arm core_state ['arm'|'thumb']
display/change ARM core state
hi6220.cpu arm disassemble address [count ['thumb']]
disassemble instructions
hi6220.cpu arm mcr cpnum op1 CRn CRm op2 value
write coprocessor register
hi6220.cpu arm mrc cpnum op1 CRn CRm op2
read coprocessor register
hi6220.cpu arm mrs op0 op1 CRn CRm op2
read system register
hi6220.cpu arm msr op0 op1 CRn CRm op2 value
write system register
hi6220.cpu arm reg
display ARM core registers
hi6220.cpu arm semihosting ['enable'|'disable']
activate support for semihosting operations
hi6220.cpu arp_examine
used internally for reset processing
hi6220.cpu arp_halt
used internally for reset processing
hi6220.cpu arp_halt_gdb
used internally for reset processing to halt GDB
hi6220.cpu arp_poll
used internally for reset processing
hi6220.cpu arp_reset
used internally for reset processing
hi6220.cpu arp_waitstate
used internally for reset processing
hi6220.cpu array2mem arrayname bitwidth address count
Writes Tcl array of 8/16/32 bit numbers to target memory
hi6220.cpu cget target_attribute
returns the specified target attribute (command valid any time)
hi6220.cpu configure [target_attribute ...]
configure a new target for use (configuration command)
hi6220.cpu cortex_a
Cortex-A command group (command valid any time)
hi6220.cpu cortex_a cache_info
display information about target caches
hi6220.cpu cortex_a dbginit
Initialize core debug
hi6220.cpu cortex_a smp_gdb
display/fix current core played to gdb
hi6220.cpu cortex_a smp_off
Stop smp handling
hi6220.cpu cortex_a smp_on
Restart smp handling
hi6220.cpu curstate
displays the current state of this target
hi6220.cpu dap
DAP command group
hi6220.cpu dap apcsw [sprot]
Set csw access bit
hi6220.cpu dap apid [ap_num]
return ID register from AP (default currently selected AP)
hi6220.cpu dap apsel [ap_num]
Set the currently selected AP (default 0) and display the result
hi6220.cpu dap baseaddr [ap_num]
return debug base address from MEM-AP (default currently selected
AP)
hi6220.cpu dap info [ap_num]
display ROM table for MEM-AP (default currently selected AP)
hi6220.cpu dap memaccess [cycles]
set/get number of extra tck for MEM-AP memory bus access [0-255]
hi6220.cpu dap ti_be_32_quirks [enable]
set/get quirks mode for TI TMS450/TMS570 processors
(configuration command)
hi6220.cpu eventlist
displays a table of events defined for this target
hi6220.cpu invoke-event event_name
invoke handler for specified event
hi6220.cpu mdb address [count]
Display target memory as 8-bit bytes
hi6220.cpu mdh address [count]
Display target memory as 16-bit half-words
hi6220.cpu mdw address [count]
Display target memory as 32-bit words
hi6220.cpu mem2array arrayname bitwidth address count
Loads Tcl array of 8/16/32 bit numbers from target memory
hi6220.cpu mwb address data [count]
Write byte(s) to target memory
hi6220.cpu mwh address data [count]
Write 16-bit half-word(s) to target memory
hi6220.cpu mww address data [count]
Write 32-bit word(s) to target memory
init
Initializes configured targets and servers. Changes command mode
from CONFIG to EXEC. Unless 'noinit' is called, this command is
called automatically at the end of startup. (command valid any time)
interface driver_name
Select a debug adapter interface (driver) (configuration command)
interface_list
List all built-in debug adapter interfaces (drivers) (command valid
any time)
interface_transports transport ...
Declare transports the interface supports. (configuration command)
irscan [tap_name instruction]* ['-endstate' state_name]
Execute Instruction Register (DR) scan. The specified opcodes are
put into each TAP's IR, and other TAPs are put in BYPASS.
jlink
perform jlink management (command valid any time)
jlink caps
show jlink capabilities
jlink config
access J-Link configuration, if no argument this will dump the
config
jlink config ip [A.B.C.D[/E] [F.G.H.I]]
set the ip address of the J-Link Pro, where A.B.C.D is the ip, E
the bit of the subnet mask, F.G.H.I the subnet mask
jlink config kickstart [val]
set Kickstart power on JTAG-pin 19.
jlink config mac_address [ff:ff:ff:ff:ff:ff]
set the MAC Address
jlink config reset
reset the current config
jlink config save
save the current config
jlink config usb_address [0x00 to 0x03 or 0xff]
set the USB-Address, This will change the product id
jlink hw_jtag [2|3]
access J-Link HW JTAG command version
jlink info
show jlink info
jlink pid
set the pid of the interface we want to use (configuration command)
jsp_port [port_num]
Specify port on which to listen for incoming JSP telnet connections.
(command valid any time)
jtag
perform jtag tap actions (command valid any time)
jtag arp_init
Validates JTAG scan chain against the list of declared TAPs using
just the four standard JTAG signals. (command valid any time)
jtag arp_init-reset
Uses TRST and SRST to try resetting everything on the JTAG scan
chain, then performs 'jtag arp_init'. (command valid any time)
jtag cget tap_name '-event' event_name
Return any Tcl handler for the specified TAP event.
jtag configure tap_name '-event' event_name handler
Provide a Tcl handler for the specified TAP event.
jtag drscan tap_name [num_bits value]* ['-endstate' state_name]
Execute Data Register (DR) scan for one TAP. Other TAPs must be in
BYPASS mode.
jtag flush_count
Returns the number of times the JTAG queue has been flushed.
jtag init
initialize jtag scan chain (command valid any time)
jtag names
Returns list of all JTAG tap names. (command valid any time)
jtag newtap basename tap_type '-irlen' count ['-enable'|'-disable'] ['-expected_id'
number] ['-ignore-version'] ['-ircapture' number] ['-mask'
number]
Create a new TAP instance named basename.tap_type, and appends it
to the scan chain. (configuration command)
jtag pathmove start_state state1 [state2 [state3 ...]]
Move JTAG state machine from current state (start_state) to state1,
then state2, state3, etc.
jtag tapdisable tap_name
Try to disable the specified TAP using the 'tap-disable' TAP event.
jtag tapenable tap_name
Try to enable the specified TAP using the 'tap-enable' TAP event.
jtag tapisenabled tap_name
Returns a Tcl boolean (0/1) indicating whether the TAP is enabled
(1) or not (0).
jtag_flush_queue_sleep [sleep in ms]
For debug purposes(simulate long delays of interface) to test
performance or change in behavior. Default 0ms. (command valid any
time)
jtag_ntrst_assert_width [milliseconds]
delay after asserting trst in ms (command valid any time)
jtag_ntrst_delay [milliseconds]
delay after deasserting trst in ms (command valid any time)
jtag_rclk [fallback_speed_khz]
With an argument, change to to use adaptive clocking if possible;
else to use the fallback speed. With or without argument, display
current setting. (command valid any time)
jtag_reset trst_active srst_active
Set reset line values. Value '1' is active, value '0' is inactive.
load_image filename address ['bin'|'ihex'|'elf'|'s19'] [min_address] [max_length]
log_output file_name
redirect logging to a file (default: stderr) (command valid any time)
mdb ['phys'] address [count]
display memory bytes
mdh ['phys'] address [count]
display memory half-words
mdw ['phys'] address [count]
display memory words
measure_clk
Runs a test to measure the JTAG clk. Useful with RCLK / RTCK.
(command valid any time)
mem2array arrayname bitwidth address count
read 8/16/32 bit memory and return as a TCL array for script
processing
mflash
mflash command group (command valid any time)
mflash bank soc_type base_addr pin_id target
configure a mflash device bank (configuration command)
mflash init
initialize mflash devices (configuration command)
ms
Returns ever increasing milliseconds. Used to calculuate differences
in time. (command valid any time)
mwb ['phys'] address value [count]
write memory byte
mwh ['phys'] address value [count]
write memory half-word
mww ['phys'] address value [count]
write memory word
nand
NAND flash command group (command valid any time)
nand device bank_id driver target [driver_options ...]
defines a new NAND bank (configuration command)
nand drivers
lists available NAND drivers (command valid any time)
nand init
initialize NAND devices (configuration command)
noinit
Prevent 'init' from being called at startup. (configuration command)
pathmove start_state state1 [state2 [state3 ...]]
Move JTAG state machine from current state (start_state) to state1,
then state2, state3, etc.
pld
programmable logic device commands (command valid any time)
pld device driver_name [driver_args ... ]
configure a PLD device (configuration command)
pld init
initialize PLD devices (configuration command)
poll ['on'|'off']
poll target state; or reconfigure background polling
poll_period
set the servers polling period (command valid any time)
power_restore
Overridable procedure run when power restore is detected. Runs 'reset
init' by default. (command valid any time)
profile seconds filename [start end]
profiling samples the CPU PC
program <filename> [address] [verify] [reset]
write an image to flash, address is only required for binary images.
verify, reset are optional (command valid any time)
ps
list all tasks
rbp address
remove breakpoint
reg [(register_number|register_name) [(value|'force')]]
display (reread from target with "force") or set a register; with no
arguments, displays all registers and their values
reset [run|halt|init]
Reset all targets into the specified mode.Default reset mode is run,
if not given.
reset_config [none|trst_only|srst_only|trst_and_srst]
[srst_pulls_trst|trst_pulls_srst|combined|separate]
[srst_gates_jtag|srst_nogate] [trst_push_pull|trst_open_drain]
[srst_push_pull|srst_open_drain]
[connect_deassert_srst|connect_assert_srst]
configure adapter reset behavior (command valid any time)
reset_nag ['enable'|'disable']
Nag after each reset about options that could have been enabled to
improve performance. (command valid any time)
resume [address]
resume target execution from current PC or address
runtest num_cycles
Move to Run-Test/Idle, and issue TCK for num_cycles.
rwp address
remove watchpoint
scan_chain
print current scan chain configuration (command valid any time)
script <file>
filename of OpenOCD script (tcl) to run (command valid any time)
shutdown
shut the server down (command valid any time)
sleep milliseconds ['busy']
Sleep for specified number of milliseconds. "busy" will busy wait
instead (avoid this). (command valid any time)
soft_reset_halt
halt the target and do a soft reset
srst_deasserted
Overridable procedure run when srst deassert is detected. Runs 'reset
init' by default. (command valid any time)
step [address]
step one instruction from current PC or address
svf svf [-tap device.tap] <file> [quiet] [nil] [progress] [ignore_error]
Runs a SVF file.
target
configure target (configuration command)
target count
Returns the number of targets as an integer (DEPRECATED) (command
valid any time)
target create name type '-chain-position' name [options ...]
Creates and selects a new target (command valid any time)
target current
Returns the currently selected target (command valid any time)
target init
initialize targets (configuration command)
target names
Returns the names of all targets as a list of strings (command
valid any time)
target number number
Returns the name of the numbered target (DEPRECATED) (command valid
any time)
target smp targetname1 targetname2 ...
gather several target in a smp list (command valid any time)
target types
Returns the available target types as a list of strings (command
valid any time)
target_request
target request command group (command valid any time)
target_request debugmsgs ['enable'|'charmsg'|'disable']
display and/or modify reception of debug messages from target
targets [target]
change current default target (one parameter) or prints table of all
targets (no parameters) (command valid any time)
tcl_port [port_num]
Specify port on which to listen for incoming Tcl syntax. Read help
on 'gdb_port'. (command valid any time)
telnet_port [port_num]
Specify port on which to listen for incoming telnet connections.
Read help on 'gdb_port'. (command valid any time)
test_image filename [offset [type]]
test_mem_access size
Test the target's memory access functions
tms_sequence ['short'|'long']
Display or change what style TMS sequences to use for JTAG state
transitions: short (default) or long. Only for working around JTAG
bugs. (command valid any time)
trace
trace command group
trace history ['clear'|size]
display trace history, clear history or set size
trace point ['clear'|address]
display trace points, clear list of trace points, or add new
tracepoint at address
transport
Transport command group (command valid any time)
transport init
Initialize this session's transport (command valid any time)
transport list
list all built-in transports (command valid any time)
transport select [transport_name]
Select this session's transport (command valid any time)
usage [command_name]
Show basic command usage; command can be multiple tokens. (command
valid any time)
verify_image filename [offset [type]]
verify_ircapture ['enable'|'disable']
Display or assign flag controlling whether to verify values captured
during Capture-IR. (command valid any time)
verify_jtag ['enable'|'disable']
Display or assign flag controlling whether to verify values captured
during IR and DR scans. (command valid any time)
version
show program version (command valid any time)
virt2phys virtual_address
translate a virtual address into a physical address (command valid
any time)
wait_halt [milliseconds]
wait up to the specified number of milliseconds (default 5000) for a
previously requested halt
wait_srst_deassert ms
Wait for an SRST deassert. Useful for cases where you need something
to happen within ms of an srst deassert. Timeout in ms (command
valid any time)
wp [address length [('r'|'w'|'a') value [mask]]]
list (no params) or create watchpoints
xsvf (tapname|'plain') filename ['virt2'] ['quiet']
Runs a XSVF file. If 'virt2' is given, xruntest counts are
interpreted as TCK cycles rather than as microseconds. Without the
'quiet' option, all comments, retries, and mismatches will be
reported.
>
Regards
Haojian
> Date: Thu, 29 Oct 2015 01:16:55 -0700
> From: philip.attfield@linaro.org
> To: haojian.zhuang@linaro.org
> CC: peter.griffin@linaro.org; dev@lists.96boards.org
> Subject: Re: fail to dump value from coprocessor in ARMv8 by openocd
>
> Hi Haojian, can you please check what "aarch64" command can do ?
>
> Although the aarch64 code is derived from V7, I think aarch64 has the
> ability to read/write coprocessors by one if its own subcommands.
>
> From gdb:
> - "mon aarch64"
> - from telnet to port 4444, "aarch64"
> help command from telnet to port 4444 should describe all of the available
> commands including aarch64.
>
> best regards,
> -Phil
>
> On 10/28/2015 8:09 PM, Haojian Zhuang wrote:
> > Hi Philip & Peter,
> >
> > I found there's the limitation on dumping coprocessor value on armv8.
> > My platform is hikey.
> >
> > I found there're "hi6220.cpu" and "arm" commands in openocd. But I
> > failed to dump any coprocessor value by these commands. After checking
> > the sourcecode, I found that they're just used to dump ARMv4 -- ARMv7.
> > And there's no really support in ARMv8 to dump coprocessor. Do you
> > plan to enable this feature on ARMv8?
> >
> > Best Regards
> > Haojian
> >
>